Kompany put last season's disappointment down to 'failure in crucial moments'.
He said: "I would say we failed in crucial moments. The FA Cup final is a big example where we failed in a very important moment.
"It would have been an OK season if we had won the FA Cup and we ruined it ourselves. We've only got ourselves to blame. We finished second and, you know, there were a lot of teams who invested a lot of money and finished below us, so you can see that it can happen.
"It was a disappointment because we won the title the season before and you just want to win it again and again. Obviously, the Champions League was just very bad."